Subversion Repositories openrisc_2011-10-31

/* BFD back-end for Sparc COFF files.

   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,

   2002, 2003, 2005, 2007 Free Software Foundation, Inc.

   Written by Cygnus Support.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#include "sysdep.h"

#include "bfd.h"

#include "libbfd.h"

#include "coff/sparc.h"

#include "coff/internal.h"

#include "libcoff.h"

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)

#define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC)

/* The page size is a guess based on ELF.  */

#define COFF_PAGE_SIZE 0x10000

static reloc_howto_type *coff_sparc_reloc_type_lookup

  PARAMS ((bfd *, bfd_reloc_code_real_type));

static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));

enum reloc_type

  {

    R_SPARC_NONE = 0,

    R_SPARC_8,          R_SPARC_16,             R_SPARC_32,

    R_SPARC_DISP8,      R_SPARC_DISP16,         R_SPARC_DISP32,

    R_SPARC_WDISP30,    R_SPARC_WDISP22,

    R_SPARC_HI22,       R_SPARC_22,

    R_SPARC_13,         R_SPARC_LO10,

    R_SPARC_GOT10,      R_SPARC_GOT13,          R_SPARC_GOT22,

    R_SPARC_PC10,       R_SPARC_PC22,

    R_SPARC_WPLT30,

    R_SPARC_COPY,

    R_SPARC_GLOB_DAT,   R_SPARC_JMP_SLOT,

    R_SPARC_RELATIVE,

    R_SPARC_UA32,

    R_SPARC_max

  };

/* This is stolen pretty directly from elf.c.  */

static bfd_reloc_status_type

bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR,

                                asection *, bfd *, char **));

static bfd_reloc_status_type

bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section,

                        output_bfd, error_message)

     bfd *abfd ATTRIBUTE_UNUSED;

     arelent *reloc_entry;

     asymbol *symbol;

     PTR data ATTRIBUTE_UNUSED;

     asection *input_section;

     bfd *output_bfd;

     char **error_message ATTRIBUTE_UNUSED;

{

  if (output_bfd != (bfd *) NULL

      && (symbol->flags & BSF_SECTION_SYM) == 0)

    {

      reloc_entry->address += input_section->output_offset;

      return bfd_reloc_ok;

    }

  return bfd_reloc_continue;

}

static reloc_howto_type coff_sparc_howto_table[] =

{

  HOWTO(R_SPARC_NONE,    0,0, 0,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_NONE",    FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_8,       0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8",       FALSE,0,0x000000ff,TRUE),

  HOWTO(R_SPARC_16,      0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16",      FALSE,0,0x0000ffff,TRUE),

  HOWTO(R_SPARC_32,      0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32",      FALSE,0,0xffffffff,TRUE),

  HOWTO(R_SPARC_DISP8,   0,0, 8,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP8",   FALSE,0,0x000000ff,TRUE),

  HOWTO(R_SPARC_DISP16,  0,1,16,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP16",  FALSE,0,0x0000ffff,TRUE),

  HOWTO(R_SPARC_DISP32,  0,2,32,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP32",  FALSE,0,0x00ffffff,TRUE),

  HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),

  HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),

  HOWTO(R_SPARC_HI22,   10,2,22,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_HI22",    FALSE,0,0x003fffff,TRUE),

  HOWTO(R_SPARC_22,      0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22",      FALSE,0,0x003fffff,TRUE),

  HOWTO(R_SPARC_13,      0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13",      FALSE,0,0x00001fff,TRUE),

  HOWTO(R_SPARC_LO10,    0,2,10,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_LO10",    FALSE,0,0x000003ff,TRUE),

  HOWTO(R_SPARC_GOT10,   0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10",   FALSE,0,0x000003ff,TRUE),

  HOWTO(R_SPARC_GOT13,   0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13",   FALSE,0,0x00001fff,TRUE),

  HOWTO(R_SPARC_GOT22,  10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22",   FALSE,0,0x003fffff,TRUE),

  HOWTO(R_SPARC_PC10,    0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10",    FALSE,0,0x000003ff,TRUE),

  HOWTO(R_SPARC_PC22,    0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22",    FALSE,0,0x003fffff,TRUE),

  HOWTO(R_SPARC_WPLT30,  0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_WPLT30",  FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_COPY,    0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_COPY",    FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),

  HOWTO(R_SPARC_UA32,    0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_UA32",    FALSE,0,0x00000000,TRUE),

};

struct coff_reloc_map {

  bfd_reloc_code_real_type bfd_reloc_val;

  unsigned char coff_reloc_val;

};

static const struct coff_reloc_map sparc_reloc_map[] =

{

  { BFD_RELOC_NONE, R_SPARC_NONE, },

  { BFD_RELOC_16, R_SPARC_16, },

  { BFD_RELOC_8, R_SPARC_8 },

  { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },

  { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits.  */

  { BFD_RELOC_32, R_SPARC_32 },

  { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },

  { BFD_RELOC_HI22, R_SPARC_HI22 },

  { BFD_RELOC_LO10, R_SPARC_LO10, },

  { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },

  { BFD_RELOC_SPARC22, R_SPARC_22 },

  { BFD_RELOC_SPARC13, R_SPARC_13 },

  { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },

  { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },

  { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },

  { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },

  { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },

  { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },

  { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },

  { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },

  { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },

  { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },

  { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },

  /*  { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */

};

static reloc_howto_type *

coff_sparc_reloc_type_lookup (abfd, code)

     bfd *abfd ATTRIBUTE_UNUSED;

     bfd_reloc_code_real_type code;

{

  unsigned int i;

  for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++)

    {

      if (sparc_reloc_map[i].bfd_reloc_val == code)

        return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];

    }

  return 0;

}

#define coff_bfd_reloc_type_lookup      coff_sparc_reloc_type_lookup

static reloc_howto_type *

coff_sparc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,

                              const char *r_name)

{

  unsigned int i;

  for (i = 0;

       i < (sizeof (coff_sparc_howto_table)

            / sizeof (coff_sparc_howto_table[0]));

       i++)

    if (coff_sparc_howto_table[i].name != NULL

        && strcasecmp (coff_sparc_howto_table[i].name, r_name) == 0)

      return &coff_sparc_howto_table[i];

  return NULL;

}

#define coff_bfd_reloc_name_lookup coff_sparc_reloc_name_lookup

static void

rtype2howto (cache_ptr, dst)

     arelent *cache_ptr;

     struct internal_reloc *dst;

{

  BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);

  cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];

}

#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)

#define SWAP_IN_RELOC_OFFSET    H_GET_32

#define SWAP_OUT_RELOC_OFFSET   H_PUT_32

#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \

  cache_ptr->addend = reloc.r_offset;

/* Clear the r_spare field in relocs.  */

#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \

  do { \

       dst->r_spare[0] = 0; \

       dst->r_spare[1] = 0; \

     } while (0)

#define __A_MAGIC_SET__

/* Enable Sparc-specific hacks in coffcode.h.  */

#define COFF_SPARC

#include "coffcode.h"

#ifndef TARGET_SYM

#define TARGET_SYM sparccoff_vec

#endif

#ifndef TARGET_NAME

#define TARGET_NAME "coff-sparc"

#endif

CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE)